Eachine CG023 protocols - what are they?

vasiliy_gr wrote: Comrades, it is a very interesting discussion, but how it can be related to YD829 protocol? All the same hardware works flawlessly with dozens of protocols and quads/helis. I personally have never seen such bad delays on 24 my other devices supported by 7e through this exactly NRF24L01...

That's my same thought But worth to take a look just in case.
Be in consideration, the emulation of XN297 started some weeks ago and probably we d'ont understand yet how it works at full.

goebish wrote: I'm confident the code is good.

Me too
I'm more inclined for something related with RF.

Interesting read (starting at page 16 section 8.2.2.1.2) about the output cap on the mentioned LDO.
I guess at Devo they never expected we put a more power hungry modul inside or doing 'diode mod' so perhaps they could got away with a normal cap instead of the I now see recommended Tantalum low ESR. In my 7E I see a normal electrolytic cap not sure if it is a low ESR... But strangely my 7E does work ok with the YD-829.

I included 2 pictures from the power supply circuit and the LDO "they used" in my 7E.







Someone on this forum desoldered his LDO and putted in this

But we will know more as Durete can hook up a scoop to his 7E.

Edit; I "inserted" 3 times the second picture but can not get it to show up in my post.

Thank you for your offer. I'm very grateful to you.
I will try to take a look at my power output ASAP (maybe today I could have some free time at work, but not sure).
In case I see something weird at output voltage I will take your offer and drop you a PM, really we don't live far away, about 600 km in between us
In the mean time, yesterday I was talking with some colleagues at work trying to find any compatible LDO, but we d'ont have any compatible at work:(
Yesterday, I flew 2 batteries at home with my YD-829 and as Vasily some days ago, I had a deja vu
Sometimes flying good, sometimes losing a lot of packets, including a big crash with a wall because drop too many packets and almost loose bind, no matter what power output I selected.

Just return with some information. Finally my LDO is the usually used LP2981 (L04A marking).




And my 3.3V supply is rock steady and totally clean at every power output I tested. I tested a lot of nRF protocols at 100uw and 150mw and include at my tests DSMX protocol at 150mw.
Scope captures in a few minutes...

And the scope captures...
I don't remember what protocol/power I was using at every sample, but as you can see every sample is perfect.

Hi Durete

I opened up again my 7E and put it under a magnifying camera. Found a letter more on the LDO marking. LPC and L
It turns out it is a...Texas Instruments.... LPC2981A
I found in the datasheet it's A grade. In that particular datasheet no mention of L04A.
I looked again on the net for LPC2981 L04A and TI has them like we know and also National Semiconductor has them with mark L04A as A grade.

So about that I guess we are back to square one... and it must be something else causing the delays.

Hey guys, quick question for you:

I have an 8s with the NRF24L01 chip in it. I also own a CG023 and gave up hope for being able to use my 8s as a transmitter, and here low and behold, you guys continue to be awesome.

I'm interested in loading this up to test it and wanted to know what that entails. I'm currently running the 4.01 release. Is the test build for cg023 4.01 + necessary code or is it "nightly build of when it was started + necessary CG023 code"?

I assume the test builds are full versions that are loaded just like 4.01 was?

I just want to know what I'm signing up for before jumping in. The stock transmitter for the CG023 makes me want to hurl.

Rhodizzle wrote: Hey guys, quick question for you:

I have an 8s with the NRF24L01 chip in it. I also own a CG023 and gave up hope for being able to use my 8s as a transmitter, and here low and behold, you guys continue to be awesome.

I'm interested in loading this up to test it and wanted to know what that entails. I'm currently running the 4.01 release. Is the test build for cg023 4.01 + necessary code or is it "nightly build of when it was started + necessary CG023 code"?

I assume the test builds are full versions that are loaded just like 4.01 was?

I just want to know what I'm signing up for before jumping in. The stock transmitter for the CG023 makes me want to hurl.

Took the plunge and I'm now on the nightly from 6/8. My CG023 isn't binding. This is my first model using the NRF24L01 so I'm wondering if that transceiver is working properly...

goebish wrote: Yup, CG023 should work without any issue, check your wiring ?

Ya, that's my next step. BTW, thanks for all of your work on that.

goebish wrote: I suppose you've configured hardware.ini properly ?

It should be, this is the first model I've built that uses the NRF24L01. I have a Hubsan X4 and a Proto X that use the A7105-500m module successfully. I put both modules in back when I bought the transmitter and just never had a use for the NRF until now. Will go through some stuff to validate that it's working correctly as that is the most likely issue since I'm not even getting an attempted bind or anything.

Durete wrote: Sometimes flying good, sometimes losing a lot of packets, including a big crash with a wall because drop too many packets and almost loose bind, no matter what power output I selected.

Exactly the same here. The power output doesn't seem to affect anything in my case. And yes, sometimes it flies better sometimes worse and I can't really find a pattern here.

After struggling my mind for some days trying to find a pattern, I have no idea what's wrong
Just finished now even to change the antenna at quadcoter's FC because was rather short (about 24mm), and this morning I tried with a Cloverleaf antenna at my Devo.
Nothing changed...

So am I - no ideas... Even worse. I visited today my mother in summer cottage - so I took 7e and 4 quads to fly a little bit. Among them I wanted to take yd-829, so downloaded into it 2050 firmware that previously was flyable. But today delay with it was absolutely unacceptable - I lost control in 2 seconds and ended the flight into the wall.

I am not sure that this experiment can be reproduced nevertheless...